GEN 2 Spark plug change, change Coils too?

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

OP
OP
Tr4ckD4ys

Tr4ckD4ys

Full Access Member
Joined
Nov 24, 2019
Posts
229
Reaction score
189
Location
Midwest
I see no reason to replace the coils; the OE coils provide more than enough voltage. Aftermarket coils tend to be spotty in terms of quality.
Thank you - very helpful. So then only change plugs and keep OE coils as is, or replace OE coils with OE coils?
 

EricM

FRF Addict
Joined
May 11, 2016
Posts
3,137
Reaction score
2,565
Location
OHIO
I rotate them. From hole to hole, not in a circular fashion LOL.

OEM Ford coils only. Aftermarket is junk.

Most Fords coils also have replaceable lower boots. Inspect the ones you take out closely for cracks. Replacing the rubber boots at each change is not a bad idea since they are pretty cheap and they take some decent abuse. Check the spring as well.
 

EricM

FRF Addict
Joined
May 11, 2016
Posts
3,137
Reaction score
2,565
Location
OHIO
Why would you need/want to replace the coils? Unless they are failing or throwing an error.

As they age, they work the coil drivers in the ECU harder. Same goes for a wider gap on worn plugs. Combine both and you can kill the coil drivers over time.

This company is the goto for repairs on Ford ECUs damaged by said failed/damaged coils.
https://circuitboardmedics.com/ford-pcm-repairs/

Not saying the Raptors ECUs are failure prone like the ones listed on their site- but maintaining the coils and plugs does help the coil drivers live a nice long life.

It's too bad Ford wants an arm and a leg for their coils. It's probably cheaper to replace the ECU once than it is to replace all the coils with OEM Ford parts a couple times. I always run them until I get misfires. It's quite obvious when one goes.
 

FordTechOne

FRF Addict
Joined
Jul 29, 2019
Posts
6,395
Reaction score
12,489
Location
Detroit
As they age, they work the coil drivers in the ECU harder. Same goes for a wider gap on worn plugs. Combine both and you can kill the coil drivers over time.

This company is the goto for repairs on Ford ECUs damaged by said failed/damaged coils.
https://circuitboardmedics.com/ford-pcm-repairs/

Not saying the Raptors ECUs are failure prone like the ones listed on their site- but maintaining the coils and plugs does help the coil drivers live a nice long life.

It's too bad Ford wants an arm and a leg for their coils. It's probably cheaper to replace the ECU once than it is to replace all the coils with OEM Ford parts a couple times. I always run them until I get misfires. It's quite obvious when one goes.

You are referencing an old issue that affected 2006/07/08 Fusion, Taurus, and Edge with the 3.0 or 3.5 V6 in which a worn faulty coil could damage the driver in the PCM, which required PCM replacement. The replacement PCMs had a more robust driver to prevent the issue from reoccurring.

Regardless, both the Gen 1 & Gen 2 EcoBoost use a 3 wire system in which the driver is mounted in the coil instead of the PCM, so there is no risk of the described issue occurring.
 
Last edited:
OP
OP
Tr4ckD4ys

Tr4ckD4ys

Full Access Member
Joined
Nov 24, 2019
Posts
229
Reaction score
189
Location
Midwest
The reason why I asked this question in first place is because when I replaced the sparks on my cayenne P cars of A would always recommend changing coils too.
That being said: This is a m-effing truck. So I’ll do what you guys say and only touch the sparks. Should I still go with those pre-gapped Ford Performance ones? @FordTechOne
 
Top